One of the tricks to glasses free 3D is that it allows the user to see 3D imagery if they look at it from a certain angle. However since we can hardly be expected to sit in one spot and not move our heads for hours, LG has made use of the built-in webcam in the DX2500 monitors to help track the viewer’s head/eyes.
This will allow the monitor to adjust the image based on where their heads/eyes have been tracked, ultimately allowing the user to see 3D images at pretty much any angle. The bad news is that if you wish to watch a show or video on this monitor with friends or family, it might prove to be a little tricky. The LG DX2500 series of monitors is currently available in South Korea for 1.29 million Won (~$1,131) and is expected to be released internationally next year.